TY - JOUR
T1 - Orbital diamagnetism in multilayer graphenes
T2 - Systematic study with the effective mass approximation
AU - Koshino, Mikito
AU - Ando, Tsuneya
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2007/8/17
Y1 - 2007/8/17
N2 - We present a theoretical study on the orbital magnetism in multilayer graphenes within the effective mass approximation. The Hamiltonian and thus susceptibility can be decomposed into contributions from subsystems equivalent to monolayer or bilayer graphene. The monolayer-type subband exists only in odd layers and exhibits a delta-function susceptibility at εF =0. The bilayer-type subband appearing in every layer number gives a singular structure in the vicinity of εF =0 due to the trigonal warping as well as a logarithmic tail away from εF =0. The integral of the susceptibility over energy is approximately given only by the layer number.
AB - We present a theoretical study on the orbital magnetism in multilayer graphenes within the effective mass approximation. The Hamiltonian and thus susceptibility can be decomposed into contributions from subsystems equivalent to monolayer or bilayer graphene. The monolayer-type subband exists only in odd layers and exhibits a delta-function susceptibility at εF =0. The bilayer-type subband appearing in every layer number gives a singular structure in the vicinity of εF =0 due to the trigonal warping as well as a logarithmic tail away from εF =0. The integral of the susceptibility over energy is approximately given only by the layer number.
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U2 - 10.1103/PhysRevB.76.085425
DO - 10.1103/PhysRevB.76.085425
M3 - Article
AN - SCOPUS:34548029174
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 8
M1 - 085425
ER -